Tilapia Seafood Stew

Name: Tilapia-Seafood Stew
Ingredients: 3 tablespoons extra-virgin olive oil; 1 onion, chopped; 1 stalk celery, thinly sliced; 4 cloves garlic, thinly sliced; 1 28-ounce can no-salt-added tomatoes, crushed by hand; Kosher salt and freshly ground pepper; 1/2 cup dry white wine; 1/4 to 1/2 teaspoon red pepper flakes; 1 1/2 pounds mussels, scrubbed and debearded; 12 ounces tilapia, cut into 8 pieces; 3 tablespoons chopped fresh parsley; 4 slices ciabatta or country bread